<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>404 - 页面未找到</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@600&display=swap" rel="stylesheet">
    <style>
        body {
            background: linear-gradient(135deg, #6c5ce7 0%, #00b894 100%);
            color: #fff;
            font-family: 'Inter', 'PingFang SC', 'Segoe UI', Arial, sans-serif;
            min-height: 100vh;
            margin: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .container {
            background: rgba(255,255,255,0.08);
            border-radius: 24px;
            box-shadow: 0 8px 32px rgba(80,120,200,0.13);
            padding: 3rem 2.5rem 2.5rem 2.5rem;
            text-align: center;
            max-width: 400px;
        }
        .big404 {
            font-size: 5rem;
            font-weight: 700;
            letter-spacing: 0.1em;
            margin-bottom: 0.5em;
            color: #fdcb6e;
            text-shadow: 0 2px 12px #0002;
        }
        h1 {
            font-size: 2rem;
            margin-bottom: 0.5em;
        }
        p {
            color: #fffbe7;
            font-size: 1.1rem;
            margin-bottom: 2em;
        }
        .btn {
            background: linear-gradient(90deg, #6c5ce7 60%, #00b894 100%);
            color: #fff;
            border: none;
            border-radius: 10px;
            padding: 0.9em 2.1em;
            font-size: 1.08rem;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 2px 8px #6c5ce733;
            transition: background .2s, transform .2s;
            letter-spacing: 0.04em;
        }
        .btn:hover {
            background: linear-gradient(90deg, #00b894 60%, #6c5ce7 100%);
            transform: translateY(-2px) scale(1.04);
        }
        @media (max-width: 500px) {
            .container { padding: 2rem 0.5rem; }
            .big404 { font-size: 3.2rem; }
        }
    </style>
</head>
<body>
<div class="container">
    <div class="big404">404</div>
    <h1>页面未找到</h1>
    <p>很抱歉，您访问的测试报告不存在或已被删除。</p>
    <button class="btn" onclick="window.location.href='/'">返回首页</button>
</div>
</body>
</html>